{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["engineering feature", "manufacturing process", "material", "manufacturing standard", "process parameter", "machine or equipment"], "input": "The main objective of this work is to show the first experiences in the development of a cost effective metal additive manufacturing system on the basis of gas metal arc welding ( GMAW ) ."}
{"engineering feature": [], "manufacturing process": ["metal additive manufacturing", "gas metal arc welding", "GMAW"], "material": [], "manufacturing standard": [], "process parameter": [], "machine or equipment": []}